Race Tech Progressively Wound Shock Spring

Race Tech HP Springs have a high stiffness-to-mass ratio. In other words, each spring is particularly light for its particular spring rate. This requires the finest materials and processing. Each spring is shot-peened and preset so it won't sack out over time.

Race tech's answer to the linkless suspension systems
Easy fix for the problem of rear suspension being too harsh and too easy to bottom
Progressive spring gives more resistance to bottoming and supplies a plusher ride
Made from chrome silicon spring steel, shot-peened, heat-treated and preset to prevent sacking
Race Tech HP Spring has the highest rate tolerances in the industry
Spring rate accurate to within .05 kg/mm
Sold individually
Made in the USA

Specification	Details
Color	Varies (make selection above)
Country of Origin	USA
Inside Diameter	Varies (make selection above)
Length	Varies (make selection above)
Material	Steel
Position	Rear
Spring Rate	Varies (make selection above)

Vehicle Fitment

Fitment is guaranteed or your money back plus free return shipping.
Don’t waste time installing a product that doesn't fit. We worked hard ensuring that this product is an exact fit on the vehicles listed below.

FC 400 1999
FC 501 1996-2000
FC 600 1999-2000
FE 400 1999
FE 501 1999-2000
FE 570 2010-2011
FE 600 2000

TC 65 2017-2023
TC 85 2014-2018, 2020-2025

125 EXC 1998-2002
125 SX 1999-2011
144 SX 2007-2008
150 SX 2009-2013
150 XC 2010-2011
150 XC-W 2017-2019, 2024
150 XC-W TPI 2020-2021
200 EXC 1998-2005
200 MXC 1998-2003
200 SX 2003-2004
200 XC 2006-2009
200 XC-W 2006-2016
250 EXC 1998-2005
250 EXC-F 2017-2019
250 MXC 1998-2001
250 SX 1998-2011
250 SX-F 2005-2010
250 XC 2006-2011
250 XC-F 2007-2012
250 XC-W 2007-2018, 2024
250 XC-W TPI 2018-2023
250 XCF-W 2007-2015
300 EXC 1998-2005
300 MXC 1998-2005
300 XC 2006-2014
300 XC-W 2006-2018, 2024
300 XC-W TPI 2019-2020
350 EXC-F 2012-2015, 2017-2024
350 XCF-W 2012-2015
380 EXC 1998-2001
380 SX 1998-2001
400 MXC 2001-2002
400 SX Racing 2000-2002
400 XC-W 2007, 2009-2010
450 EXC 2007
450 EXC-F 2018
450 EXC-G Racing 2003-2006
450 EXC-R 2008
450 MXC-G Racing 2003-2005
450 SMR 2005-2009
450 SX 2006
450 SX Racing 2003-2005
450 SX-F 2007-2012
450 XC 2007
450 XC-F 2008-2009
450 XC-W 2007, 2009, 2012-2016
500 EXC 2012-2013
500 EXC-F 2017-2020
505 SX-F 2008
505 XC-F 2008-2009
520 EXC-G Racing 2002
520 MXC Racing 2001-2002
520 SX Racing 2000-2002
525 EXC 2007
525 EXC-G Racing 2003-2006
525 MXC-G Racing 2003-2005
525 SX 2006
525 SX Racing 2003-2005
525 XC-G Racing 2006
525 XC-W 2007
530 EXC-R 2008
530 XC-W 2009
560 SMR 2006-2007
65 SX 2002-2014, 2017-2024
65 XC 2008-2009
85 SX 2003-2024
950 Super Enduro R 2007-2008
990 Adventure 2007-2008

YZ65 2019-2025

Customer Reviews

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Solid well made spring. Very happy with its suspension performance. The only disappointment was I chose an orange spring and received a black spring.

The spring gave my bike new life. Its sometimes the little things you take for granted. The bike is to my liking now and responds like it should in the turns and the jumps. Couldn't be happier.

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Questions & Answers

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210lb rider on an 08 300xcw

By Anon.

Ktm 300 xcw

Assuming you're an intermediate rider, you'll want to select a P15 spring rate.

By Staff

Answer Question

I'm 250lb on a 2008 ktm 300 xc-w what spring rate would I need?

By Anon.

Race Tech suggests the P25 rate spring for your weight on that bike.

By Andy

Answer Question

What spring would I need for a 100lb rider on a 2019 ktm 65

By Anon.

Race Tech suggests using the P25 rate spring for that 2019 KTM 65SX with a 100 lb rider.

By Andy

Answer Question

I ride a 2014 ktm 300 xcw six days and I weigh 185 what spring rate do you recommend?

By Bailey

I was trying to set rider sag but the spring is stock and is technically too stiff for me... When adjusted to sag height I need the spring becomes loose when bike is on the stand. So when I jump it is loose then slams back into place because it's back off almost all of the way.

Race Tech suggests that you go with the P15 rate spring for your weight on that 2014 KTM 300 XC-W.

By Andy

Answer Question

I'm a 200lb. rider on a 2008 KTM 450 XC-F. Which spring would recommend. My stock spring is too soft.

By Jason

Race Tech suggests the P20 rate spring for your weight on that bike.

By Andy

Answer Question

what rate spring for a 65 pound rider on a 2022 tc 65

By Nik

Race Tech recommends the P20 rate spring for a rider of that weight on that bike.

By Andy

Answer Question

What spring for 200lb rider 2006 300xcw ktm

By Jeremy H.

Race Tech recommends the P30 rate spring for your weight on that 2006 KTM 300 XC-W.

By Andy

Answer Question

What spring would I need for a 65lb rider on 2019 yz65?

By Jarred

2019 yz65

Race Tech suggests that the P25 spring be used for that weight rider on the 2019 YZ65.

By Andy

Answer Question

Is this a good fit for 150lb b rider? 2001 exc200

By EddieV

2001 exc200 Looking for a much softer ride over stock white spring

The P20 rate spring is what Race Tech would recommend for your weight on that 2001 KTM 200 EXC.

By Andy

Answer Question

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Race Tech Progressively Wound Shock Spring

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